"Real Housewives of Beverly Hills" star Yolanda Foster says her Lyme Disease has gotten so bad, she can no longer read or write.  

In a blog for Bravo, Foster (who has had Lyme Disease for three years) says she relapsed last month and has had a hard time recovering.

She writes, "I have lost the ability to read, write, or even watch TV, because I can't process information or any stimulation for that matter. It feels like someone came in and confiscated my brain and tied my hands behind my back to just watch and see life go by without me participating in it."

Foster describes herself as being "of no use to anyone or anything," but says she will continue to fight and is thankful for the support from her family and friends.

Early Monday morning, Yolanda posted a photo from a hospital in Singapore, writing, "I guess God gives his hardest battles to the strongest soldiers."